http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Shallow ground-water flow, water levels, and quality of water, 1980-84, Cowles Unit, Indiana Dunes National Lakeshore
iv, 25 pages : illustrations, maps ; 28 cm.
by David A. Cohen and Robert J. Shedlock ; prepared in cooperation with the National Park Service.
Water-resources investigations report ; 85-4340